CN212848697U

CN212848697U - Device for fixing soft-packaged battery cell

Info

Publication number: CN212848697U
Application number: CN202021766050.8U
Authority: CN
Inventors: 吕游; 李晓冬; 魏维刚
Original assignee: Shanxi Dayun Mengguli New Energy Technology Co ltd
Current assignee: Shanxi Dayun Mengguli New Energy Technology Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-03-30
Anticipated expiration: 2030-08-21

Abstract

The utility model relates to an electric automobile goes up power battery's auxiliary device specifically is a device of fixed laminate polymer core. It lacks the device of directly fixing electric core in the battery box in order to solve prior art. This device is including first baffle and the second baffle of difference vertical fixation at the battery box inner bottom, first baffle and second baffle are parallel to each other, be equipped with a compact heap between first baffle and the second baffle, be used for pressing between compact heap and the first baffle and put electric core, accompany the wedge between compact heap and the second baffle, the face that compact heap and wedge contacted is the inclined plane, the inclined plane is the obtuse angle with the contained angle of compact heap upper surface, be equipped with first countersunk head through-hole on the wedge, the bolt passes first countersunk head through-hole spiro union in the screw of battery box inner bottom on the wedge, make the wedge inclined plane promote the compact heap, thereby compress tightly electric core. This device has realized that electric core can directly be fixed in the battery box.

Description

Device for fixing soft-packaged battery cell

Technical Field

The utility model relates to an electric automobile goes up power battery's auxiliary device specifically is a device of fixed laminate polymer core.

Background

At present, the battery box assembly process of the power battery system is mainly to assemble soft package battery cores into a certain number of small modules, and then the small modules are assembled into the battery box. Among the prior art, the in-process of assembling into little module at the laminate polymer core, at first the laminate polymer core that will assemble into little module is pressed from both sides with compressing tightly the frock with the frock clamp, then beat and glue, secondly will beat gluey laminate polymer core and put into the plastic-aluminum casing, it is internal at last fixed to the battery box with it, it is visible from this, can only compress tightly laminate polymer core outside the battery box when the fixed laminate polymer core of prior art, beat and assemble into little module after gluing and could fix to the battery box in, the assembling process is complicated, in the later maintenance process, when certain monomer electric core breaks down in little module, need change whole little module, can't realize the maintenance of single electric core, the battery package is reprocessed and can cause a large amount of man-hour wastes and material waste.

Disclosure of Invention

The utility model discloses a solve lack among the prior art and directly fix the device with the laminate polymer core in the battery box, provide a neotype device that can realize directly fixing laminate polymer core in the battery box.

The utility model discloses an adopt following technical scheme to realize: the utility model provides a device of fixed laminate polymer core, including first baffle and the second baffle of difference vertical fixation at the battery box inner bottom, first baffle and second baffle are parallel to each other, be equipped with a compact heap between first baffle and the second baffle, be used for pressing between compact heap and the first baffle and put electric core, accompany the wedge (the upper end length of the longitudinal section of wedge is greater than the length of lower extreme) between compact heap and the second baffle, the face that compact heap and wedge contacted is the inclined plane, the inclined plane is the obtuse angle with the contained angle of compact heap upper surface, be equipped with first countersunk head through-hole on the wedge, the bolt passes in the screw of first countersunk head through-hole spiro union in the battery box inner bottom on the wedge, make the wedge inclined plane promote the compact heap, thereby compress tightly electric core.

During installation, firstly, the distance between the first baffle and the second baffle is calculated according to the number of the electric cores required by the serial-parallel connection of the lugs of the soft-package electric core (known in the field: the distance is calculated according to the number of the electric cores, the thickness of each electric core and the size of the compression block and the wedge block) and the position of a threaded hole of the inner bottom of the battery box matched with the first countersunk head through hole on the wedge block, then the first baffle (directly fixed on the inner bottom of the battery box), all the electric cores, the compression block, the wedge block and the second baffle (directly fixed on the inner bottom of the battery box) are sequentially placed on the inner bottom of the battery box, and a bolt penetrates through the first countersunk head through hole on the wedge block and is screwed in the threaded hole of the inner bottom of the battery box.

The utility model discloses produced beneficial effect as follows: the utility model provides a device of fixed soft-packaged electrical core has not only realized that soft-packaged electrical core can directly be fixed in the battery box, the device simple structure moreover, simple to operate, and the suitability is strong, has realized that multilayer electricity core can superpose the technology demand that compresses tightly, and electric core interchangeability is high, and easy maintenance is favorable to reducing the maintenance cost of whole case battery.

Drawings

Fig. 1 is a schematic structural view (unlocked state) of the present invention;

fig. 2 is a schematic structural diagram (locked state) of the present invention;

FIG. 3 is a front view of a wedge block;

FIG. 4 is a left side view of FIG. 3;

fig. 5 is a top view of fig. 3.

In the figure: 1-first baffle, 2-second baffle, 3 compact heap, 4-electric cores, 5-wedge, 6 gusset, 7-first spacing lug, 8-spacing lug of second, 9-first countersunk head through-hole, 10-second countersunk head through-hole, 11-bolt, 12-screw.

Detailed Description

Referring to fig. 1-5, a device for fixing soft package battery cell, including first baffle 1 and second baffle 2 of vertical fixation at the battery box inner bottom respectively, first baffle 1 and second baffle 2 are parallel to each other, be equipped with a compact heap 3 between first baffle 1 and the second baffle 2, be used for pressing between compact heap 3 and the first baffle 1 and put electric core 4, it accompanies wedge 5 to accompany between compact heap 3 and the second baffle 2, the face that compact heap 3 and wedge 5 contacted is the inclined plane, the inclined plane is the obtuse angle with the contained angle of compact heap 3 upper surface, be equipped with first countersunk head through-hole 9 on wedge 5, bolt 11 passes first countersunk head through-hole 9 spiro union on wedge 5 in screw 12 of battery box inner bottom, make wedge 5 inclined plane promote compact heap 3, thereby compress tightly electric core 4.

In specific implementation, the longitudinal section of the wedge-shaped block 5 is a right-angle trapezoid. By the above-mentioned structural feature of wedge 5 can draw, the face of second baffle 2 and the contact of wedge 5 is vertical face when making bolt locking, and soft-packaged electrical core 4 is pressed from both sides tighter more steady.

The longitudinal section of the wedge-shaped block 5 is a right-angle trapezoid. When the bolt is locked, the soft package battery cell 4 is clamped more tightly and more stably.

During concrete implementation, the front end and the rear end of one side face, in contact with the compact heap 3, of the wedge 5 are respectively provided with a first limiting bump 7 which is used for positioning the wedge 5 when the wedge 5 is embedded, so that the deviation of the wedge 5 when the soft package battery cell 4 is compressed is prevented, and meanwhile, a certain limiting effect is also achieved on the compact heap 3.

The front end and the rear end of the other side face, in contact with the second baffle 2, of the wedge block 5 are respectively provided with a second limiting bump 8 which is used for positioning the wedge block 5 when the wedge block 5 is embedded, so that the deviation of the wedge block 5 when the battery cell is pressed is further prevented.

The first limiting convex block 7 and the second limiting convex block 8 are respectively positioned in the middle positions of two side surfaces of the wedge-shaped block 5. The structure enables the pressing block 3 to be pushed uniformly by the inclined plane of the wedge-shaped block 5, and the soft package battery cell 4 is compacted more tightly.

First baffle 1 and second baffle 2 are L type baffle, and the corner of L type baffle is equipped with gusset 6, all is equipped with on first baffle 1 and the second baffle 2 to be used for with the fixed countersunk head through-hole 10 of second of battery box inner bottom. Such structure setting facilitates the use bolt and fixes with battery box inner bottom.

In this specific embodiment, a device for fixing a soft-package battery cell further includes a flame-retardant foam with a thickness of 0.3-0.5mm, which is used for being clamped between adjacent battery cells 4. When the battery box shakes, electric core 4 also can shake thereupon, can produce the friction between the adjacent electric core 4 simultaneously, and then can arouse the emergence that the explosion of electric core 4 leads to the incident, including fire-retardant bubble cotton not only can reduce rocking of electric core but also can reduce the emergence of electric core explosion accident to a certain extent.

The utility model provides a device of fixed soft-packaged electrical core, still includes and is used for pressing from both sides tight insulating protection pad between first baffle 1 and electric core 4, avoids first baffle 1 electrically conductive, ensures operative employee's personal safety.

Claims

1. A device for fixing a soft package battery cell is characterized by comprising a first baffle (1) and a second baffle (2) which are vertically fixed at the inner bottom of a battery box respectively, wherein the first baffle (1) and the second baffle (2) are parallel to each other, a compression block (3) is arranged between the first baffle (1) and the second baffle (2), the compression block (3) is used for pressing the battery cell (4) between the first baffle (1) and the compression block (3), a wedge block (5) is clamped between the compression block (3) and the second baffle (2), the surface of the compression block (3) contacted with the wedge block (5) is an inclined surface, the inclined surface is an obtuse angle with the upper surface of the compression block (3), a first countersunk head through hole (9) is arranged on the wedge block (5), a bolt (11) penetrates through the first countersunk head through hole (9) on the wedge block (5) and is in a screw hole (12) in the inner bottom of the battery box in a screwed manner, so that the wedge block (5) pushes the compression block (, thereby compressing the cell (4).

2. The device for fixing the soft package battery cell according to claim 1, wherein the longitudinal section of the wedge-shaped block (5) is a right-angle trapezoid.

3. The device for fixing the soft-package battery cell according to claim 2, characterized in that the longitudinal section of the compressing block (3) is a right-angle trapezoid.

4. The device for fixing the soft package battery cell according to claim 1, 2 or 3, wherein the front end and the rear end of the side surface of the wedge-shaped block (5) contacting the compression block (3) are respectively provided with a first limiting bump (7) for positioning the wedge-shaped block (5) when the wedge-shaped block (5) is embedded.

5. The device for fixing the soft package battery cell according to claim 4, wherein the front end and the rear end of the other side surface of the wedge-shaped block (5) contacting the second baffle (2) are respectively provided with a second limiting bump (8) for positioning the wedge-shaped block (5) when the wedge-shaped block (5) is embedded.

6. The device for fixing the soft package battery cell according to claim 5, wherein the first limit bump (7) and the second limit bump (8) are respectively located at the middle positions of two side surfaces of the wedge-shaped block (5).

7. The device for fixing the soft package battery core according to claim 6, wherein the first baffle (1) and the second baffle (2) are both L-shaped baffles, rib plates (6) are arranged at corners of the L-shaped baffles, and second countersunk through holes (10) for fixing the inner bottom of the battery box are formed in the first baffle (1) and the second baffle (2).

8. The device for fixing the soft package battery cell according to claim 7, further comprising a flame-retardant foam with a thickness of 0.3-0.5mm for clamping between adjacent battery cells (4).

9. The device for fixing the soft-package battery cell according to claim 8, characterized by further comprising an insulating protective pad clamped between the first baffle (1) and the battery cell (4).